racket@> (8-queens)((11)(25)(38)(46)(53)(67)(72)(84))((11)(26)(38)(43)(57)(64)(72)(85))((11)(27)(34)(46)(58)(62)(75)(83))((11)(27)(35)(48)(52)(64)(76)(83));; ...((18)(22)(34)(41)(57)(65)(73)(86))((18)(22)(35)(43)(51)(67)(74)(86))((18)(23)(31)(46)(52)(65)(77)(84))((18)(24)(31)(43)(56)(62)(77)(85))'(there are no more values)